Browsing Department of Mathematics by Title
Now showing items 464-483 of 1050
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Lie–Butcher series and geometric numerical integration on manifolds
(Doctoral thesis, 2011-11-04)The thesis belongs to the field of “geometric numerical integration” (GNI), whose aim it is to construct and study numerical integration methods for differential equations that preserve some geometric structure of the ... -
Likelihood Estimation of Jump-Diffusions. Extensions from Diffusions to Jump-Diffusions, Implementation with Automatic Differentiation, and Applications
(Master thesis, 2016-06-02)This thesis considers the problem of likelihood- based parameter estimation for time-homogeneous jump-diffusion processes. The problem is that there often is no analytic solution to the stochastic differential equations ... -
A Likelihood Ratio and Markov Chain-Based Method to Evaluate Density Forecasting
(Peer reviewed; Journal article, 2019)In this paper, we propose a likelihood ratio based method to evaluate density forecasts which can jointly evaluate the unconditional forecasted distribution and dependence of the outcomes. Unlike the well‐known Berkowitz ... -
Limited Link of Common Blood Parameters with Tinnitus
(Journal article; Peer reviewed, 2023)Background: Tinnitus severity is generally assessed by psychometric and audiological instruments. However, no objective measure exists to evaluate the subjective discomfort and suffering caused by this hearing phenomenon. ... -
Linear and Nonlinear Convection in Porous Media between Coaxial Cylinders
(Master thesis, 2011-05-02)In this thesis we develop a mathematical model for describing three-dimensional natural convection in porous media filling a vertical annular cylinder. We apply a linear stability analysis to determine the onset of convection ... -
Linear and nonlinear convection in porous media between coaxial cylinders
(Peer reviewed; Journal article, 2011)We uncover novel features of three-dimensional natural convection in porous media by investigating convection in an annular porous cavity contained between two vertical coaxial cylinders. The investigations are made using ... -
Linear and weakly nonlinear propagation of a pulsed sound beam
(Department of Applied Mathematics report, Research report, 1991-06) -
Linear waves and stability in ideal magnetohydrodynamics
(Department of Applied Mathematics report, Research report, 1987-05) -
Lipid Levels During Adult Lifetime in Men and Women With and Without a Subsequent Incident Myocardial Infarction: A Longitudinal Analysis of Data From the Tromsø Study 1974 to 2016
(Journal article; Peer reviewed, 2023)Background The atherosclerotic effect of an adverse lipid profile is assumed to accumulate throughout life, leading to increased risk of myocardial infarction (MI). Still, little is known about age at onset and duration ... -
Liposomal doxorubicin improves radiotherapy response in hypoxic prostate cancer xenografts
(Peer reviewed; Journal article, 2011-10-07)Background: Tumor vasculature frequently fails to supply sufficient levels of oxygen to tumor tissue resulting in radioresistant hypoxic tumors. To improve therapeutic outcome radiotherapy (RT) may be combined with cytotoxic ... -
Local Gaussian Cross-Spectrum Analysis
(Journal article; Peer reviewed, 2023)The ordinary spectrum is restricted in its applications, since it is based on the second-order moments (auto- and cross-covariances). Alternative approaches to spectrum analysis have been investigated based on other measures ... -
Local Lead–Lag Relationships and Nonlinear Granger Causality: An Empirical Analysis
(Journal article; Peer reviewed, 2022)The Granger causality test is essential for detecting lead–lag relationships between time series. Traditionally, one uses a linear version of the test, essentially based on a linear time series regression, itself being ... -
Local Likelihood
(Master thesis, 2012-04-23)Methods for probability density estimation are traditionally classified as either parametric or non-parametric. Fitting a parametric model to observations is generally a good idea when we have sufficient information on the ... -
A Local Streamline Eulerian-Lagrangian Method for Two-Phase Flow
(Journal article, 2000)A method for solving the saturation equation for two-phase now is presented. The method may be viewed as an operator splitting method or as an Eulerian-Lagrangian backtracking procedure or as a modi£ed method of characteristics. ... -
Log Hochschild Homology of Categorical Products and Coproducts
(Master thesis, 2017-07-26)As the front page implies, this is a thesis about log Hochschild homology. Our primary goal will be to understand how the log Hochschild homology groups acts on products and coproducts in the category of commutative pre-log ... -
Logarithmic Hochschild homology
(Master thesis, 2015-06-01)The purpose of this thesis is to analyse the logarithmic Hochschild homology for pre-log rings and to provide some tools to compute it in certain cases. One of the main strategies that we will employ to describe the log ... -
Logistrule: A knowledge-based system for logistic regression
(Statistical report no. 28, Research report, 1996-07) -
Long time well-posedness of Whitham-Boussinesq systems
(Journal article; Peer reviewed, 2022)Consideration is given to three different full dispersion Boussinesq systems arising as asymptotic models in the bi-directional propagation of weakly nonlinear surface waves in shallow water. We prove that, under a ... -
Long Wave Models with Application to High Speed Vessels in Shallow Water
(Doctoral thesis, 2007-02-23) -
Machine learning in marine ecology: an overview of techniques and applications
(Journal article; Peer reviewed, 2023)Machine learning covers a large set of algorithms that can be trained to identify patterns in data. Thanks to the increase in the amount of data and computing power available, it has become pervasive across scientific ...